Porn or Nude ART

I wonder where the line is between PORN and Nude Art. Is it a degree of nudity or the subject matter or both? It is all still a great mystery to me but I continue to keep myself involved in finding out what the real answer is. I am still trying to figure out what is considered art. I was a fan of the graphic arts back in the mid 70’s with the Mad Magazines and Cracked but that was mostly an influence from my step brother. I was never a real big comic book fan and never really bought into that. At the time I was into STAMPs collecting them, well because my father was a Postal Clerk for the US Navy and he had given me [actually my mother did] a box full of unused mint condition stamps from the mid to late 60’s. Even though my father had past away and I had a new step dad it was the only connection to my father I had. Well, back to the subject at hand. I have research much into how Romans had assisted deaths when they did not want to fall on their swords and I thought maybe because of modern times how women are taking on the roles that man use to take on. I though why not have the same problems and same death as men did. Instead of the usual woman death of poison or hanging. That a woman should penetrate another woman wanting to die because of shame or even failure. (Death Before Dishonor) It is what I think is a good subject of which I had the props and again bought some clothing from a thrift shop close by. Red seems to be my theme nowadays. The idea I got from the HBO series ROME and of course the film Gladiator. A quick stab downward through the collar bone to the heart and aorta and you bleed out quickly. It looks gruesome but its over in a mater of seconds.